DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 267

• Manufacturer Part Number: DF3048BVX25V
• Description: MCU 3/5V 128K PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048BVX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

8.4.7
The DMAC can be activated by an internal interrupt, external request, or auto-request. The
available activation sources differ depending on the transfer mode and channel as indicated in
table 8.11.
Table 8.11 DMAC Activation Sources
Activation Source
Internal
interrupts
External
requests
Auto-request
Activation by Internal Interrupts
When an interrupt request is selected as a DMAC activation source and the DTE bit is set to 1, that
interrupt request is not sent to the CPU. It is not possible for an interrupt request to activate the
DMAC and simultaneously generate a CPU interrupt.
When the DMAC is activated by an interrupt request, the interrupt request flag is cleared
automatically. If the same interrupt is selected to activate two or more channels, the interrupt
request flag is cleared when the highest-priority channel is activated, but the transfer request is
held pending on the other channels in the DMAC, which are activated in their priority order.
DMAC Activation
IMIA0
IMIA1
IMIA2
IMIA3
TXI0
RXI0
Falling edge of
DREQ
Low input at
DREQ
Yes
Channels
0A and 1A
Yes
Yes
Yes
Yes
Yes
No
No
No
Short Address Mode
Channels
0B and 1B
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Rev. 3.00 Sep 27, 2006 page 239 of 872
Full Address Mode
Normal
No
No
No
No
No
No
Yes
Yes
Yes
Section 8 DMA Controller
REJ09B0325-0300
Block
Yes
Yes
Yes
Yes
No
No
Yes
No
No